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Finding the Fourth Proportional to 31,445.35, 43,392.21 and 17,299.11

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Solution

The fourth proportional to 31,445.35, 43,392.21 and 17,299.11 is: 23,871.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,445.35 : 43,392.21 = 17,299.11 : x
  2. Step 2: Convert to fraction form
    31,445.35/43,392.21 = 17,299.11/x
  3. Step 3: Cross multiply
    31,445.35x = 43,392.21 × 17,299.11
  4. Step 4: Simplify right side
    31,445.35x = 750,646,613.93
  5. Step 5: Solve for x
    x = 750,646,613.93/31,445.35
  6. Step 6: Final answer
    x = 23,871.47

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.